CN103168460B - There is in radio access network the VPN Content cache of remote filter service - Google Patents

There is in radio access network the VPN Content cache of remote filter service Download PDF

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Publication number
CN103168460B
CN103168460B CN201180050776.9A CN201180050776A CN103168460B CN 103168460 B CN103168460 B CN 103168460B CN 201180050776 A CN201180050776 A CN 201180050776A CN 103168460 B CN103168460 B CN 103168460B
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response
base station
content
cacheable
ran
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CN103168460A (en
Inventor
E·J·布尔卡特
V·穆尔
G·科摩
S·罗德里格斯
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International Business Machines Corp
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International Business Machines Corp
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Priority claimed from US12/910,359 external-priority patent/US9560155B2/en
Priority claimed from US12/910,252 external-priority patent/US9294895B2/en
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H04L12/1432—Metric aspects
    • H04L12/1435—Metric aspects volume-based
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H04L12/1432—Metric aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/56—Provisioning of proxy services
    • H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24—Accounting or billing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H04L12/1403—Architecture for metering, charging or billing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5603—Access techniques

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)
  • Meter Arrangements (AREA)

Abstract

Embodiments of the invention provide the method for the VPN Content cache for having remote filter service in radio access network (RAN), system and computer program.In one embodiment of the invention, a kind of method for the VPN Content cache with remote filter service in RAN may include that the response receiving to the request from the end user device wirelessly coupling with the base station of RAN, it is not cacheable by this response flag, and via data communication network, this response is routed to base station.In the one side of embodiment, response can receive in the RNC of RAN.It should be noted that the evaluation that response flag can be depended on the strategy with regard to this response for not cacheable process.Finally, it in the another aspect of the present embodiment, is not cacheable by response flag, the HTTP(Hypertext Transport Protocol) header annotating this response can be included to indicate that this response will not be cached in base station.

Description

There is in radio access network the VPN Content cache of remote filter service
Technical field
The present invention relates to the content-search service being provided in radio access network, and particularly Ground relates to the cache of the retrieval content in radio access network.
Background technology
Radio access network (RAN) provides the basis of Modern cellular phone.RAN in order to The mobile device of different terminals user is bonded to core network (CN) so that individuality can by Wirelessly enjoy in the geographic area that each base station of radio access network is covered phone and Data communication.By and large, RAN provides in order to be situated between both voice and data service from aerial Matter (over-the-air medium) is transferred to land circuit-switched communication network and includes the whole world The necessary basis framework of both packet-switched data communication networks of internet.
At present, some standards are implemented already in connection with RAN.Example includes global mobile communication system System (GSM), UMTS (UMTS) and GSM " Edge " RAN (GERAN).RAN generally includes multiple different radio network controller (RNC), this A little each Self management of radio network controller (RNC) provide wireless connectivity to geographic cell One group of base station.The whole different RNC of RAN is all via referred to as integrated service radio packet services The gateway of node (SGSN) is linked to the thing of referred to as cellular data core or CN.CN is to logical The client crossing RAN connection provides various service.One of major function is across public switched telephone Network (PSTN) routing calls.Another function is packet to route to the such as whole world because of spy Internet Protocol (IP) network of net, so that the terminal use of RAN has access to by content The service that transmission network (CDN) provides.To this end, CN includes that referred to as gateway GPRS service saves The gateway of point (GGSN).
Typical CDN can provide the senior interior of such as VPN Content cache and information filtering etc Hold transmission service.VPN Content cache refers to it is assumed hereinafter that the centre of the lower content previously retrieved Temporarily storage: to the close in time subsequent request of content can by temporarily store rather than CDN repeats meet the more time-consuming request of content.Comparatively speaking, information filtering Refer to that meeting specific configuration file in content (for example, is issued by specific source or and have specific Theme) when restriction to the transmission of institute's request content.In both circumstances, perform senior in Hold service necessary package process often to require to be provided in those services in CN, wherein CN Middle utilized communication protocol and communication protocol (that is, the transmission control protocol of fhe global the Internet (TCP)/IP) consistent.
Even so, some are still had to have been proposed that to content service (for example, VPN Content cache And information filtering) support be placed in RAN.Thus, the United States Patent (USP) of Kovvali et al. Application publication No.20100034089 suggestion VPN Content cache service is placed in RAN in and TCP/IP payload is extracted from the special RAN agreement of RAN.While it is true, but will be such as height The content service of speed caching and filtration etc makes it closer to terminal use not in being placed in each base station It is desired, because of that in operation needs solidification to support this type of due to the physical surroundings of base station Hold the calculating device of service.Therefore, when when base station performs content service, minimum meter is only provided Calculate device only to process most basic content service.But, often need to perform more content clothes Business, and it is not only most basic content service.For example, in most cases, need right Content service is transferred to terminal use and performs chargeable service.Need than most basic meter in chargeable service Calculate in the degree of the more calculating device of device, for convenience's sake, by chargeable service together with correspondence Content service be provided in together in RAN.
Therefore, it is necessary in the art to solve the problems referred to above.
Content of the invention
Embodiments of the invention solve the deficiency with regard to the content service in RAN for the prior art, and And provide a kind of in RAN have remote filter service VPN Content cache novelty and Non-obvious method, system and computer program.In one embodiment of the present of invention In, the method for the VPN Content cache with remote filter service in RAN can include Receive the sound to the request from the end user device wirelessly coupling with the base station of RAN Should, it is not cacheable by response flag, and by data communication network, response is routed to base Stand.In the one side of the present embodiment, response can be received in the RNC of RAN.Should note Response flag be may rely on the evaluation of the strategy with regard to response by meaning for not cacheable process. For example, strategy can be according to retention period, the constituent according to content or the source according to content Content during (only giving a few examples) will respond is appointed as not cacheable.Finally, at the present embodiment In Ling Yifangmian, by response flag for the Hyper text transfer association that can include annotation response can not be cached View (HTTP) header will be not internally cached in base station to point out this response.
In another embodiment of the present invention, can be joined based on the data handling system of RAN Put the VPN Content cache for having remote filter service.System can include base station, this base station Including antenna, receiver, transmitter, processor, local cache and arrive data communication network Network interface.This system can also include the RNC coupling via data communication network and base station And the cache module coupling in being arranged in base station and with cache.Finally, this system can To include the filtering services performing in RNC.This service can include following procedure code, should Code be activated with: receive and represent the request of data from base station of end user device, pass through The CN being coupled routes requests to the content server in computer communication network, receives to please According to strategy, the response asked, determines whether response is cacheable, however, it is determined that respond as caching Be then marked as not cacheable, and response is forwarded to base station.
From a second aspect, the present invention provides a kind of in radio access network (RAN) Having the method for VPN Content cache of remote filter service, the method includes: receive to from The response of the request of the end user device that the base station of wireless mode and RAN couples；Response is marked It is designated as not cacheable；And, via data communication network, response is routed to base station.
From a second aspect, the present invention provides a kind of being configured to have the interior of remote filter service Hold the data handling system based on radio access network (RAN) of cache, this system bag Including: base station, this base station includes antenna, receiver, transmitter, processor, local cache And the network interface with data communication network；Radio network controller (RNC), via data Communication network couples with base station；The cache mould coupling in being arranged in base station and with cache Block；And, the filtering services performing in RNC, this service includes:
For receiving the device of the request of data from base station that represent end user device；
Route requests to computer communication network for passing through coupled core network (CN) In the device of content server；For receiving the device of the response to request；
For determining whether response is cacheable device according to strategy；
For being marked as not cacheable device in the case of determining response for caching； And
For response is forwarded to the device of base station.
On the other hand, the present invention is provided to radio access network (RAN) has The computer program of the VPN Content cache of remote filter service, this computer program bag Include: computer-readable recording medium, can be read and stored by processing circuit by process circuit execution Instruction, for performing the method for step being used for performing the present invention.
On the other hand, the present invention provides a kind of that be stored on computer-readable medium and can The digital computer computer program being loaded in internal memory, including software code partition, when described journey When sequence is run on computers, for performing the step of the present invention.
Other aspects of the present invention will partly be illustrated by the description that follows, and according to this Describe by for part it will be apparent that or can be learned by the practice of the present invention.The present invention Aspect (aspect) will by the element specifically noted by appending claims and combination come Realize and reach.It should be appreciated that as required, above-mentioned overall describe and described in detail below Both are exemplary and explanatory, and are not limiting as the present invention.
Brief description
Now, the present invention will be referring to the drawings shown preferred by way of example (only making example) Embodiment describes:
Fig. 1 is to have remote filter according to a preferred embodiment of the present invention in RAN The icon of the process of the VPN Content cache of service illustrates；
Fig. 2 be according to a preferred embodiment of the present invention be configured to there is remote filter service The schematic illustration of the data handling system based on RAN of VPN Content cache；And
Fig. 3 is that the illustration according to a preferred embodiment of the present invention is for having far in RAN The process flow diagram flow chart of the VPN Content cache of journey filtering services.
Detailed description of the invention
Embodiments of the invention provide the content for having remote filter service in RAN slow at a high speed Method, system and the computer program deposited.According to one embodiment of present invention, exist RNC receives the content requests from the different base station coupling with RNC and can pass through CN road By the content provider being addressed to content distributed network (for example, fhe global the Internet). Received request response can be compared with filtering policy, whether to determine individual response Can cache.Thus, filtering policy can be according to the type, interior of the retention period of content, content It is not cacheable that the source holding or the constituent of content carry out given content.For be considered can not Each response of caching, not cacheable response can so mark and be forwarded to therefrom Receive the base station of corresponding requests.And then, the cache module in base station can only cache Those are for being labeled as not cacheable response.In this way, caching function can remain distribution In each base station, retain filtering services in the rnc simultaneously.
In another illustration, Fig. 1 depicts by way of illustration has remote filter in RAN The process of the VPN Content cache of service.As it is shown in figure 1, honeycomb communicating network can be provided In order to include different base stations 120, these base stations 120 are arranged to set to different terminals user Standby 110 provide the radio telephone to PSTN140 to access.The cluster of base station 120 can be with communication Mode is linked to common RNC130, this RNC130 and then can couple with CN150, from And form RAN.CN150 can include serving as CN150, PSTN140 and each The SGSN160A of the gateway of the business between RNC130 and serve as CN150 and lead to data Communication network 100(is usually fhe global the Internet) between both GGSN160B of gateway.As Known to the art, CN150 self can support numerous content service 170.
It should be noted that data handling system 190A for information filtering can be arranged in RNC130 In, and can be arranged to and different VPN Content cache 190B coupled in communication, each VPN Content cache 190B performs respectively in different base stations 120.Data handling system 190A Can include program code, when performing in a data processing system, this program code processes response In being derived from the content requests of end user device 110 via corresponding base station 120 and pass through CN Content 190C retrieving in 150 content servers 180 from data communication network 100.Special Not, data handling system 190A can be according to designating whether to recognize specific content 190C Filter content 190C for cacheable filtering policy.For thinking not cacheable content 190C, data handling system 190A can be like this by embedded content 190C of for example just annotation Http header in mark content 190C.Thereafter, data handling system 190A can be by Content 190C routes to corresponding base station 120 to be back to end user device 110, and If content 190C is not yet marked as not cacheable, then come by VPN Content cache 190B Cache.
In another illustration, Fig. 2 is to be configured to packet data network (for example, 2.5G or 3G Network) in there is the data handling system based on RAN of VPN Content cache of remote filter Schematic illustration.This system can include being generally IP network or asynchronous via communication network 250( Transmission mode (ATM) network) the base station 200A that couples with RNC200B.Base station 200A Receiver/transmitter 230 can be included, this receiver/transmitter 230 via antenna 265 from Different terminals user equipment reception air communication in the transmission range of base station 200A, and via These air communications are routed to RNC200B by network interface 210.Processor 240 can be carried For in order to calculating process is performed to this data when received data is placed in internal memory 220.With The cache module 280 that VPN Content cache 275 couples can be via the process of base station 200A Device 240 performs.Cache module 280 can set in response to from the terminal use being coupled Standby request and delaying in cache 275 is performed to content received in the 200A of base station Deposit the cache of content.
RNC200B can include again the having at least one of execution supporting operating system 270 Reason device and the master computer 260 of internal memory.Operating system 270 again can hosted content filtering services The execution of 280.Content filtering services 280 can include program code, when in operating system 270 During middle execution, this program code is able to receive that the sound to the request from data communication network 250 Should, and strategy 285 is applied to, and whether these responses are cacheable to determine these responses. For being confirmed as not cacheable response, the program code of content filtering services 280 can be like this (point out that these responses will be by the 200A of base station by for example carrying out header annotation to these responses 280 caches of cache module) mark these not cacheable responses.
In another illustration, Fig. 3 is the content illustrating for having remote filter service in RAN The flow chart of the process of cache.From the beginning of block 310, content requests can be received from representative The base station of the wirelessly end user device of access base station.In block 320, this request Can be routed on CN, finally to be processed by the content provider in fhe global the Internet.In district In block 330, the response to this request can receive via CN, and in block 340, Certain strategy can be applied to this response.Strategy will can be delayed at a high speed with the content in specified response Deposit or be marked as not cacheable.For example, strategy can illustrate: based on the guarantor of content The source staying phase (age), the composition (constituency) of content or content (is only enumerated several Standard), content will not be cached.
In decision block 350, if the strategy once applied cause content to be confirmed as can Caching, then response can be routed to base station, to pass to end user device and no matter base The cache module stood is cached in base station.But, if in decision block 350 In, determine that this content is not cacheable according to strategy, then, in block 370, can ring at this Content in Ying should before being back to base station (block 360) together with not cacheable mark Response flag is not cacheable.
As understood by those skilled in the art, the aspect of the present invention can be implemented as system, method Or computer program.Therefore, the aspect of the present invention can use complete hardware embodiment, The embodiment (including firmware, resident software, microcode etc.) of complete software or combine software with The form of the embodiment of hardware aspect, these embodiments all can be generally called herein work " circuit ", " module " or " system ".Additionally, the aspect of the present invention can use be implemented in one or more The form of the computer program in computer-readable medium, this one or more computer-readables Medium has the computer-readable program code being implemented on.
Any combination of one or more computer-readable medium can be utilized.Computer-readable medium Can be computer-readable signal media or computer-readable recording medium.For example, computer can Read storage medium and can be (but are not limited to) electronics, magnetic, optics, electromagnetism, infrared ray or half The system of conductor, device or equipment, or any appropriate group of aforementioned system, device or equipment Close.The more specific examples (non-exhaustive list) of computer-readable recording medium will be listd under including: There is the electrical connector of one or more wire, portable computer diskette, hard disk, arbitrary access Memory (RAM), read-only storage (ROM), EPROM (EPROM or flash memory), optical fiber, portable optic disk read-only storage (CD-ROM), optics Storage device, magnetic storage apparatus, or the random suitable combination of aforementioned device.At presents In context, computer-readable recording medium can be can to contain or store to perform system for instruction System, device or equipment use or combined command performs the program that system, device or equipment use Any tangible medium.
Computer-readable signal media can include propagated data-signal, and this data-signal has It is implemented in the computer-readable journey of wherein (for example, the part in a base band or as carrier wave) Sequence code.This signal propagated can take various forms in any one, these forms include The random suitable combination of (but not limited to) electromagnetism, optics or any of the above form.Computer can Read signal medium can be not computer-readable recording medium and can pass on, propagate or carry Perform system, device or equipment for instruction execution system, device or equipment or combined command Any computer-readable medium of the program using.
The program code being implemented on computer-readable medium can use any suitable medium to pass Defeated, including but not limited to wireless, wired, Connectorized fiber optic cabling, radio frequency and fellow thereof, or Above-mentioned every random suitable combination.For performing the computer program of the operation of each side of the present invention Code can be write by any combination of one or more programming languages, this one or more programmings Language includes Subject-oriented programming language and conventional procedural programming languages.Program code is permissible Perform on the computer of user completely, partly perform on the computer of user, as independence Software kit performs, and partly performs on the computer of user, and partly at remote computer Upper execution or execution on remote computer or server completely.Completely in remote computer or In the situation performing on server, remote computer (can include office via any kind of network Territory net (LAN) or wide area network (WAN)) it is connected to the computer of user, or can connect To outer computer (for example, using ISP, via internet).
Above by reference to method according to an embodiment of the invention, device (system) and computer The flowchart illustration of program product and/or block diagram describe each aspect of the present invention.With regard to this Speech, the flow chart in accompanying drawing and block diagram show each embodiment according to the present invention system, Method and possible framework, function and the operation implemented of computer program.For example, flow Each block in journey figure or block diagram can be with the module of representation program code, section or part, journey The module of sequence code, section or part include or many for implementing specified logic function Individual executable instruction.It shall also be noted that in some alternate embodiments, block is previously mentioned The order that can not be previously mentioned according to accompanying drawing of function occur.For example, depending on involved function Fixed, two blocks shown continuously can essentially substantially simultaneously perform, or these blocks have When can perform in the opposite order.It shall also be noted that in block diagram and/or flowchart illustration The combination of the block in each block and block diagram and/or flowchart illustration can be by performing refer to Determine function or the system based on specialized hardware of action is implemented, or pass through specialized hardware and calculating The combination of machine instruction is implemented.
It is also understood that each block in flowchart illustration and/or block diagram and flow chart illustration Show and/or the combination of block in block diagram can be implemented by computer program instructions.Permissible There is provided these computer program instructions to all-purpose computer, special-purpose computer or other are programmable The processor of data processing equipment is to produce machine so that via computer or other programmable numbers The instruction performing according to the processor of processing means is created that for implementing procedure figure and/or block diagram The device of the function/action specified by block.
These computer program instructions are equally stored in computer-readable medium, this computer Computer-readable recording medium can instruct computer, other programmable data processing meanss or other equipment with spy Fixed mode works so that manufacture is produced in the instruction being stored in computer-readable medium, This manufacture includes for the function/action specified by the block of flowchart and/or block diagram Instruction.Computer program instructions is equally loaded onto computer, other programmable data process On device or other equipment, to promote sequence of operations step at computer, other programmable dresses Put or perform on other equipment, thus producing computer-implemented process so that at this computer or The instruction performing on other programmable devices provides the district being used for flowchart and/or block diagram The process of the function/action specified by block.
Finally, term used herein is merely for the purpose describing specific embodiment, and not It is intended to limit the present invention.As it is used herein, unless the context clearly dictates otherwise, otherwise Singulative " one " and " being somebody's turn to do " mean to include equally plural form.It is also understood that term Specify when "comprising" and/or " including " are in for this specification and there is stated spy Levy, integer, step, operation, element and/or component, but be not precluded from existing or separately add one Or multiple other features, integer, step, operation, element, component and/or above every group Group.
All devices in claims below or step add the counter structure of function element, material Material, action and equivalent mean to include the unit of other prescriptions for combining special requirement right Part performs any structure, material or the action of function.Be given for the purpose illustrating and describe Description of the invention, but this description be not meant as by detailed or limit the invention to public affairs The form opened.Without departing from the scope of the invention, to those skilled in the art, Many modifications and variations should be apparent from.Embodiment is in order to the principle of the present invention and reality Border should be used as optimal explanation and select and describe, and enable those skilled in the art for There is each embodiment of the various modifications being suitable for covered special-purpose to understand the present invention.
Therefore simultaneously present invention is carried out by the embodiment with reference to present invention in detail Describe, it should be understood that in the present invention being defined without departing from claims included below Scope in the case of, modifications and variations are all possible.

Claims (11)

1. the content high speed being used in radio access network RAN there is remote filter service The method of caching, described method includes:
Receive to from the end user device wirelessly coupling with the base station of described RAN The response of request, is disposed with cache in described base station；
By described response flag for caching in described base station in the RNC of described RAN 's；And
Via data communication network, markd for band described response is routed to described base station.
2. method according to claim 1, wherein receive to from wirelessly with institute The response of the request stating the end user device that the base station of RAN couples includes: at radio net Controller RNC receives to from the terminal wirelessly coupling with the base station of described RAN The response of the request of user equipment.
3. the method according to any claim in claim 1 or 2, wherein by institute State response flag to include for not cacheable: in response to described response application strategy by described sound Should be labeled as not cacheable.
4. method according to claim 3, wherein said strategy will respond according to retention period In content be appointed as not cacheable.
5. method according to claim 3, wherein said strategy is according to the group of described content Content in becoming composition to respond is appointed as not cacheable.
6. method according to claim 3, wherein said strategy coming according to described content Content during source will respond is appointed as not cacheable.
7. method according to claim 1 and 2, wherein by described response flag for can not Including of caching: annotate the HTTP http header of described response to indicate described sound Should be by not at described base station high speed caching.
8. the VPN Content cache being configured to have remote filter service based on radio The data handling system of access network RAN, described system includes:
Base station, including antenna, receiver, transmitter, processor, local cache and with The network interface of data communication network；
The radio network controller coupling with described base station via described data communication network RNC；
The cache module coupling in being arranged in described base station and with cache；And
The filtering services performing in described RNC, described service includes:
For receiving the device of the request of data from described base station that represent end user device；
For passing through coupled core network CN, described request is routed to computer communication network In the device of content server；
For receiving the device of the response to described request；
For determining described response whether cacheable device according to strategy；
For determining that described response is marked as in described base station not in the case of can not caching Cacheable device；And
For the device of described base station will be forwarded to markd described response.
9. system according to claim 8, wherein said strategy will respond according to retention period In content be appointed as not cacheable.
10. system according to claim 8, wherein said strategy is according to the group of described content Content in becoming composition to respond is appointed as not cacheable.
11. systems according to claim 8, wherein said strategy coming according to described content Content during source will respond is appointed as not cacheable.
CN201180050776.9A 2010-10-22 2011-10-13 There is in radio access network the VPN Content cache of remote filter service Active CN103168460B (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US12/910,252 2010-10-22
US12/910,359 2010-10-22
US12/910,359 US9560155B2 (en) 2010-10-22 2010-10-22 Ensuring content filtering through a specialized tier of proxy caches at the base station
US12/910,252 US9294895B2 (en) 2010-10-22 2010-10-22 Caching at the wireless tower with remote charging services
PCT/EP2011/067858 WO2012052342A1 (en) 2010-10-22 2011-10-13 Content caching with remote filtering services in a radio access network

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CN103168460A CN103168460A (en) 2013-06-19
CN103168460B true CN103168460B (en) 2016-10-05

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